======================================
| 0
| xx__-> [    9.185779][  T229] ------------[ cut here ]------------
| [ 9.186253][ T229] WARNING: CPU: 2 PID: 229 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
| [    9.186683][  T229] Modules linked in: netdevsim
[    9.187396][  T229] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 9.187671][ T229] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.187955][ T229] Code: 00 e8 a3 4a fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 d8 33 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	a3 4a fe ff 48 8b 5c 	movabs %eax,0x58245c8b48fffe4a
   9:	24 58 
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 d8 33 78 00       	call   0x7833f9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[    9.188725][  T229] RSP: 0018:ffffc90000b07520 EFLAGS: 00010246
[    9.189035][  T229] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[    9.189359][  T229] RDX: 0000000000000000 RSI: ffff888002a0ac98 RDI: ffff888009c30b78
[    9.189687][  T229] RBP: ffffffffa4523440 R08: 0000000000000000 R09: fffffbfff447d83c
[    9.190023][  T229] R10: ffffffffa23ec1e7 R11: ffff888009c30040 R12: 0000000000000000
[    9.190348][  T229] R13: ffff888002a0a128 R14: ffff888002a0a008 R15: ffff888002a0a000
[    9.190674][  T229] FS:  00007faf4eee4740(0000) GS:ffff888036100000(0000) knlGS:0000000000000000
[    9.191055][  T229] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    9.191351][  T229] CR2: 000055d32a950b38 CR3: 000000000bdce006 CR4: 0000000000772ef0
[    9.191682][  T229] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[    9.192015][  T229] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[    9.192341][  T229] PKRU: 55555554
[    9.192513][  T229] Call Trace:
[    9.192687][  T229]  <TASK>
[ 9.192809][ T229] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.193062][ T229] ? __warn (kernel/panic.c:748) 
[ 9.193241][ T229] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.193458][ T229] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 9.193688][ T229] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 9.193858][ T229] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 9.194093][ T229] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 9.194327][ T229] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.194579][ T229] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 9.194856][ T229] ? _raw_spin_unlock_irq (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:97 ./include/linux/spinlock_api_smp.h:159 kernel/locking/spinlock.c:202) 
[ 9.195100][ T229] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 9.195331][ T229] register_netdevice (net/core/dev.c:11003) 
[ 9.195563][ T229] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 9.195795][ T229] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 9.196046][ T229] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 9.196322][ T229] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 9.196492][ T229] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 9.196783][ T229] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 9.197090][ T229] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 9.197374][ T229] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 9.197604][ T229] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 9.197881][ T229] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 9.198118][ T229] ? kernfs_put (./arch/x86/include/asm/atomic.h:67 (discriminator 1) ./include/linux/atomic/atomic-arch-fallback.h:2278 (discriminator 1) ./include/linux/atomic/atomic-instrumented.h:1384 (discriminator 1) fs/kernfs/dir.c:557 (discriminator 1)) 
[ 9.198290][ T229] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 9.198518][ T229] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 9.198746][ T229] __driver_probe_device (drivers/base/dd.c:800) 
[ 9.198966][ T229] driver_probe_device (drivers/base/dd.c:830) 
[ 9.199200][ T229] __device_attach_driver (drivers/base/dd.c:959) 
[ 9.199423][ T229] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 9.199690][ T229] bus_for_each_drv (drivers/base/bus.c:462) 
[ 9.199914][ T229] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 9.200141][ T229] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 9.200361][ T229] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 9.200580][ T229] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 9.200804][ T229] __device_attach (drivers/base/dd.c:1030) 
[ 9.201050][ T229] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 9.201270][ T229] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 9.201496][ T229] ? do_raw_spin_unlock (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./include/asm-generic/qspinlock.h:57 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141) 
[ 9.201729][ T229] bus_probe_device (drivers/base/bus.c:537) 
[ 9.201953][ T229] device_add (drivers/base/core.c:3672) 
[ 9.202204][ T229] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 9.202427][ T229] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 9.202659][ T229] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 9.202941][ T229] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 9.203242][ T229] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 9.203462][ T229] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 9.203685][ T229] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 9.203903][ T229] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 9.204139][ T229] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 9.204318][ T229] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 9.204543][ T229] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 9.204766][ T229] ? do_user_addr_fault (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 9.205013][ T229] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[ 9.205250][ T229] ksys_write (fs/read_write.c:731) 
[ 9.205424][ T229] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 9.205651][ T229] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 9.205884][ T229] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 9.206124][ T229] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[    9.206395][  T229] RIP: 0033:0x7faf4f025b77
[ 9.206628][ T229] Code: 0b 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0b 00                	or     (%rax),%eax
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[    9.207375][  T229] RSP: 002b:00007ffcc1a25bd8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[    9.207709][  T229] RAX: ffffffffffffffda RBX: 0000000000000008 RCX: 00007faf4f025b77
[    9.208047][  T229] RDX: 0000000000000008 RSI: 000055d32a94fb30 RDI: 0000000000000001
[    9.208369][  T229] RBP: 000055d32a94fb30 R08: 0000000000000000 R09: 00007faf4f0984e0
[    9.208690][  T229] R10: 00007faf4f0983e0 R11: 0000000000000246 R12: 0000000000000008
[    9.209118][  T229] R13: 00007faf4f0e1760 R14: 0000000000000008 R15: 00007faf4f0dc9c0
| [   14.515420][  T383] ------------[ cut here ]------------
| [ 14.515897][ T383] WARNING: CPU: 3 PID: 383 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
| [   14.516326][  T383] Modules linked in: netdevsim
| [   14.516953][  T383] Tainted: [W]=WARN
[   14.517154][  T383] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 14.517415][ T383] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 14.517679][ T383] Code: 00 e8 a3 4a fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 d8 33 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	a3 4a fe ff 48 8b 5c 	movabs %eax,0x58245c8b48fffe4a
   9:	24 58 
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 d8 33 78 00       	call   0x7833f9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[   14.518402][  T383] RSP: 0018:ffffc90000897520 EFLAGS: 00010246
[   14.518663][  T383] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   14.518976][  T383] RDX: 0000000000000000 RSI: ffff888008f8ac98 RDI: ffff888009ac8b78
[   14.519300][  T383] RBP: ffffffffa4523440 R08: 0000000000000000 R09: fffffbfff447d83c
[   14.519612][  T383] R10: ffffffffa23ec1e7 R11: ffff888009ac8040 R12: 0000000000000000
[   14.519921][  T383] R13: ffff888008f8a128 R14: ffff888008f8a008 R15: ffff888008f8a000
[   14.520241][  T383] FS:  00007faf4eee4740(0000) GS:ffff888036180000(0000) knlGS:0000000000000000
[   14.520599][  T383] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   14.520858][  T383] CR2: 00007faf4f098733 CR3: 0000000005902006 CR4: 0000000000772ef0
[   14.521189][  T383] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   14.521497][  T383] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   14.521814][  T383] PKRU: 55555554
[   14.521971][  T383] Call Trace:
[   14.522137][  T383]  <TASK>
[ 14.522247][ T383] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 14.522459][ T383] ? __warn (kernel/panic.c:748) 
[ 14.522622][ T383] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 14.522832][ T383] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 14.523057][ T383] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 14.523218][ T383] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 14.523429][ T383] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 14.523652][ T383] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 14.523871][ T383] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 14.524144][ T383] ? _raw_spin_unlock_irq (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:97 ./include/linux/spinlock_api_smp.h:159 kernel/locking/spinlock.c:202) 
[ 14.524362][ T383] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 14.524600][ T383] register_netdevice (net/core/dev.c:11003) 
[ 14.524814][ T383] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 14.525059][ T383] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 14.525288][ T383] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 14.525555][ T383] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 14.525718][ T383] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 14.525988][ T383] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 14.526267][ T383] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 14.526539][ T383] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 14.526759][ T383] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 14.527028][ T383] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 14.527242][ T383] ? kernfs_put (./arch/x86/include/asm/atomic.h:67 (discriminator 1) ./include/linux/atomic/atomic-arch-fallback.h:2278 (discriminator 1) ./include/linux/atomic/atomic-instrumented.h:1384 (discriminator 1) fs/kernfs/dir.c:557 (discriminator 1)) 
[ 14.527401][ T383] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 14.527617][ T383] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 14.527831][ T383] __driver_probe_device (drivers/base/dd.c:800) 
[ 14.528054][ T383] driver_probe_device (drivers/base/dd.c:830) 
[ 14.528262][ T383] __device_attach_driver (drivers/base/dd.c:959) 
[ 14.528472][ T383] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 14.528725][ T383] bus_for_each_drv (drivers/base/bus.c:462) 
[ 14.528934][ T383] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 14.529163][ T383] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 14.529372][ T383] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 14.529579][ T383] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 14.529794][ T383] __device_attach (drivers/base/dd.c:1030) 
[ 14.530014][ T383] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 14.530223][ T383] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 14.530432][ T383] ? do_raw_spin_unlock (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./include/asm-generic/qspinlock.h:57 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141) 
[ 14.530647][ T383] bus_probe_device (drivers/base/bus.c:537) 
[ 14.530858][ T383] device_add (drivers/base/core.c:3672) 
[ 14.531081][ T383] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 14.531287][ T383] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 14.531507][ T383] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 14.531784][ T383] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 14.532087][ T383] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 14.532295][ T383] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 14.532510][ T383] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 14.532715][ T383] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 14.532929][ T383] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 14.533118][ T383] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 14.533332][ T383] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 14.533542][ T383] ? do_user_addr_fault (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 14.533759][ T383] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[ 14.533974][ T383] ksys_write (fs/read_write.c:731) 
[ 14.534146][ T383] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 14.534351][ T383] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 14.534569][ T383] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 14.534779][ T383] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   14.535045][  T383] RIP: 0033:0x7faf4f025b77
[ 14.535262][ T383] Code: 0b 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0b 00                	or     (%rax),%eax
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[   14.535971][  T383] RSP: 002b:00007ffcc1a25bd8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   14.536290][  T383] RAX: ffffffffffffffda RBX: 0000000000000008 RCX: 00007faf4f025b77
[   14.536601][  T383] RDX: 0000000000000008 RSI: 000055d32a9518b0 RDI: 0000000000000001
[   14.536903][  T383] RBP: 000055d32a9518b0 R08: 0000000000000000 R09: 00007faf4f0984e0
[   14.537230][  T383] R10: 00007faf4f0983e0 R11: 0000000000000246 R12: 0000000000000008


Finger prints:
__netdev_update_features:register_netdevice:nsim_create:__nsim_dev_port_add:nsim_dev_port_add_all